The song was not a hit in its original incarnation, though a sheet music edition was published by Shapiro, Bernstein & Co. in 1931.
In 1936, the song was substantially rewritten by composer Saul Chaplin, lyricist Sammy Cahn, and saxophonist L.E.
In its original form, this motif was "If that isn't love, I guess it'll do / Till the real thing comes along".
The re-written song was published by Chappell & Co. and quickly became a hit, with recordings in 1936 by Andy Kirk and His 12 Clouds of Joy, Fats Waller, Jan Garber & His Orchestra (vocal by Russell Brown) and by Erskine Hawkins & His Orchestra (vocal by Billy Daniels).
[1] While at least one early sheet music edition of the 1936 song omitted Nichols and Holiner from the credits, ASCAP and most sheet music editions list five writers (Nichols, Holiner, Chaplin, Cahn, and Freeman).